SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '88c6a5a1c499dfb6b7b759ba9fa5962dc202f60380f1810d4c13b8ca3fe22c2e' 
  AND token = 'yFeupA6R+VaPVTsjAzjLC/u+yJ/lsZCLCOZBdVfxDvs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}